2.7" LSA SUPERCHARGER MODULAR PULLEY SYSTEM FIT 09-15 CADILLAC CTS-V CAMARO ZL1

Once that is done the pulley simply slides on and tightens down with the stainless bolts. This makes for a system that is very easy to switch pulleys. Remove 5 bolts with standard allen wrench tool and you can put on a different size pulley.